Updated 2 Oct 2026
Abilities/Groundbreaker

Groundbreaker fills your Special slot. Delayed impact special ability of the physical school. Base damage 390. Cast 6 ticks, cooldown 110 ticks. 4 impacts of radius 1.6 after a 1-tick telegraph.

You get it by equipping 19 bases across 6 lines: Bearbrand Greatsword, Cragfall Greatsword, Nightglacier Greatsword, Oathbound Greatsword and Sunforge Greatsword and 1 more.

The draft can bend it 6 ways — Echo, Reach, Area, Force, Duration and Critical — and cards that ask for area, critical, on_hit and push will find it.

Between rooms it can be offered 142 cards: 33 written for it specifically, plus the 109 that any ability can take. Those cards can put Burn, Chill and Crumble on it, and attune it to Fire, Frost and Stone.

6 Uniques are built on gear that hands it to you: The Felled Oak, Vowsplitter, The Second Oath, Aftershocks, Stonecircle and The Glacier's Shoulder.

Gear that hands it to you

6 lines · 19 bases
LineSlotTiers, and the item levels they drop atFound in
Bearbrand Greatsword (as Special, 2H)Main Hand
T2 iLvl 15–29T3 iLvl 30–44T4 iLvl 45–59T5 iLvl 60–79T6 iLvl 80+
DEMON
Cragfall Greatsword (as Special, 2H)Main Hand
T4 iLvl 45–59T5 iLvl 60–79T6 iLvl 80+
DEMON
Nightglacier Greatsword (as Special, 2H)Main Hand
T6 iLvl 80+
NIGHTMARE
Oathbound Greatsword (as Special, 2H)Main Hand
T1 iLvl 1–14T2 iLvl 15–29T3 iLvl 30–44T4 iLvl 45–59T5 iLvl 60–79T6 iLvl 80+
DEMON
Sunforge Greatsword (as Special, 2H)Main Hand
T4 iLvl 45–59T5 iLvl 60–79T6 iLvl 80+
DEMON
Worldsend Greatsword (as Special, 2H)Main Hand
T6 iLvl 80+
MORTAL

How the draft bends it

6 ways to change it
ChangeWhat it does to a delayed_impact
Echo
The whole cast plays once more after a short gap, at reduced effect.
+100% Repeats
-25% Damage
Reach
The ability reaches farther.
+15% RangeUnits
Area
Wider bursts, arcs and impact zones.
+12% Radius
Force
Harder hits: knockback, shove and stagger pressure.
+1 Knockback
Duration
Statuses, buffs, summons and channels last longer.
+20% StatusDuration
Critical
The ability crits more often; heals and wards grow instead.
+4 CritBonus

The fine print

the raw numbers behind it
Damage tagsphysical, melee, area
Fires onwindup → release → impact
RangeUnits7
Radius1.6
TelegraphTicks1
Count4
Knockback1
Lanetrue
LaneGapTicks3
StaggerTicks12
EliteStaggerTicks6

Cards it can be offered

142 cards it can see
Written for this ability (33)
Widened Focus
Minor · common
Farcaster
Minor · rare
Widening Gyre
Minor · rare
Forceful
Minor · rare
Lingering Grasp
Minor · rare
Deadly Focus
Minor · rare
Focused Burst
Minor · common
Quickened Focus
Minor · common
Red Recompense
Minor · rare
Wave Reach
Minor · common
Area Weight
Minor · common
Keen Focus
Major · rare
Crushing Blow
Major · rare
Flamebrand Focus
Major · rare
Rimebound Focus
Major · rare
Stormbound Focus
Major · rare
Venombound Focus
Major · rare
Bloodsworn Focus
Major · rare
Stonebound Focus
Major · rare
Lightsworn Focus
Major · rare
Voidtouched Focus
Major · rare
Endless Refrain
Major · legendary
Vast Focus
Major · rare
Longshot Focus
Major · rare
Lingering Focus
Major · rare
Opening Act
Major · rare
Flowing Finisher
Major · rare
War Rhythm
Major · rare
Shieldwall
Major · rare
Battle Trance
Major · rare
Wide Pulse
Major · rare
Quick Tome
Major · rare
Heavy Wave
Major · rare
Plus the ones any ability can take (109)

Nothing on these cards narrows the draft, so every ability can be offered them — see all 142 together →

What it can end up carrying

if the draft goes your way
StatusesBurn, Chill, Crumble
AffinitiesFireFrostStone

Uniques

built on gear that grants it
The Felled Oak
Your Main deals 40% more damage and shoves 50% harder, but winds up 20% slower.
Vowsplitter
Your Main deals 50% more damage and swings 50% wider. Your hits apply Crumble.
The Second Oath
Your cleave lands twice and hits 2 more bodies each time, but winds up 20% slower.
Aftershocks
Groundbreaker quakes 3 times and applies Crumble; every Sunder is Seismic, but it recharges 30% slower.
Stonecircle
Groundbreaker raises 9 slabs in a full circle around you at half its reach, each hitting 30% softer.
The Glacier's Shoulder
Heavy Cleave sweeps an 80° wider arc, shoves 1.5 units harder and applies Chill, but winds up 20% slower.